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From:   Dave Hansen <dave.hansen@intel.com>
Subject: Re: [PATCH 20/35] mm: Update can_follow_write_pte() for shadow stack
In-Reply-To: <20220130211838.8382-21-rick.p.edgecombe@intel.com>
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On 1/30/22 13:18, Rick Edgecombe wrote:
> Like a writable data page, a shadow stack page is writable, and becomes
> read-only during copy-on-write, but it is always dirty.

One other thing...

The language in these changelogs is a bit sloppy.  For instance, what
does "always dirty" mean here?  pte_dirty()?  Or strictly _PAGE_DIRTY?

In other words, logically dirty, or literally "has *the* dirty bit set"?